Pub Date : 2020-03-01DOI: 10.1109/6GSUMMIT49458.2020.9083740
S. Soderi
This paper considers improving the confidentiality of the next generation of wireless communications by using the watermark-based blind physical layer security (WBPLSec) in Visible Light Communications (VLCs). Since the growth of wireless applications and service, the demand for a secure and fast data transfer connection requires new technology solutions capable to ensure the best countermeasure against security attacks. VLC is one of the most promising new wireless communication technology, due to the possibility of using environmental artificial lights as data transfer channel in free-space. On the other hand, VLCs are even inherently susceptible to eavesdropping attacks. This work proposes an innovative scheme in which red, green, blue (RGB) light-emitting-diodes (LEDs) and three color-tuned photo-diodes (PDs) are used to secure a VLC by using a jamming receiver in conjunction with the spread spectrum watermarking technique. To the best of the author's knowledge, this is the first work that deals with physical layer security on VLC by using RGB LEDs.
{"title":"Enhancing Security in 6G Visible Light Communications","authors":"S. Soderi","doi":"10.1109/6GSUMMIT49458.2020.9083740","DOIUrl":"https://doi.org/10.1109/6GSUMMIT49458.2020.9083740","url":null,"abstract":"This paper considers improving the confidentiality of the next generation of wireless communications by using the watermark-based blind physical layer security (WBPLSec) in Visible Light Communications (VLCs). Since the growth of wireless applications and service, the demand for a secure and fast data transfer connection requires new technology solutions capable to ensure the best countermeasure against security attacks. VLC is one of the most promising new wireless communication technology, due to the possibility of using environmental artificial lights as data transfer channel in free-space. On the other hand, VLCs are even inherently susceptible to eavesdropping attacks. This work proposes an innovative scheme in which red, green, blue (RGB) light-emitting-diodes (LEDs) and three color-tuned photo-diodes (PDs) are used to secure a VLC by using a jamming receiver in conjunction with the spread spectrum watermarking technique. To the best of the author's knowledge, this is the first work that deals with physical layer security on VLC by using RGB LEDs.","PeriodicalId":385212,"journal":{"name":"2020 2nd 6G Wireless Summit (6G SUMMIT)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127640599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-01DOI: 10.1109/6GSUMMIT49458.2020.9083898
H. Wymeersch, G. Seco-Granados
In 5G simultaneous localization and mapping (SLAM), estimates of angles and delays of mm Wave channels are used to localize the user equipment and map the environment. The interface from the channel estimator to the SLAM method, which was previously limited to the channel parameters estimates and their uncertainties, is here augmented to include the detection probabilities of hypothesized landmarks, given certain a user location. These detection probabilities are used during data association and measurement update, which are important steps in any SLAM method. Due to the nature of mm Wave communication, these detection probabilities depend on the physical layer signal parameters, including beamforming, precoding, bandwidth, observation time, etc. In this paper, we derive these detection probabilities for different deterministic and stochastic channel models and highlight the importance of beamforming.
{"title":"Adaptive Detection Probability for mmWave 5G SLAM","authors":"H. Wymeersch, G. Seco-Granados","doi":"10.1109/6GSUMMIT49458.2020.9083898","DOIUrl":"https://doi.org/10.1109/6GSUMMIT49458.2020.9083898","url":null,"abstract":"In 5G simultaneous localization and mapping (SLAM), estimates of angles and delays of mm Wave channels are used to localize the user equipment and map the environment. The interface from the channel estimator to the SLAM method, which was previously limited to the channel parameters estimates and their uncertainties, is here augmented to include the detection probabilities of hypothesized landmarks, given certain a user location. These detection probabilities are used during data association and measurement update, which are important steps in any SLAM method. Due to the nature of mm Wave communication, these detection probabilities depend on the physical layer signal parameters, including beamforming, precoding, bandwidth, observation time, etc. In this paper, we derive these detection probabilities for different deterministic and stochastic channel models and highlight the importance of beamforming.","PeriodicalId":385212,"journal":{"name":"2020 2nd 6G Wireless Summit (6G SUMMIT)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123686477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-01DOI: 10.1109/6GSUMMIT49458.2020.9083775
J. Brito, L. Mendes, José Gustavo Sampaio Gontijo
Typically, the evolution of the 3GPP mobile communication standards follow a pattern where a new generation is proposed every 10 years. The requirements and applications that are covered by a new mobile network are defined by those countries that researches this topic and provide most interesting technical solutions. In order to be active in this process, Brazil must start researching 6G networks and propose solutions for the most relevant applications for the national scenario. This paper presents the 6G Brazil project, which aims for structuring the Brazilian research efforts towards the conception of the 6G networks. The main overall goal of the project is to increase the influence during the standardization process, guarantying that the important applications for the Brazilian society and economy are addressed by the future mobile network.
{"title":"Brazil 6G Project - An Approach to Build a National-wise Framework for 6G Networks","authors":"J. Brito, L. Mendes, José Gustavo Sampaio Gontijo","doi":"10.1109/6GSUMMIT49458.2020.9083775","DOIUrl":"https://doi.org/10.1109/6GSUMMIT49458.2020.9083775","url":null,"abstract":"Typically, the evolution of the 3GPP mobile communication standards follow a pattern where a new generation is proposed every 10 years. The requirements and applications that are covered by a new mobile network are defined by those countries that researches this topic and provide most interesting technical solutions. In order to be active in this process, Brazil must start researching 6G networks and propose solutions for the most relevant applications for the national scenario. This paper presents the 6G Brazil project, which aims for structuring the Brazilian research efforts towards the conception of the 6G networks. The main overall goal of the project is to increase the influence during the standardization process, guarantying that the important applications for the Brazilian society and economy are addressed by the future mobile network.","PeriodicalId":385212,"journal":{"name":"2020 2nd 6G Wireless Summit (6G SUMMIT)","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115893773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-01DOI: 10.1109/6GSUMMIT49458.2020.9083850
Henri Hurskainen, Rehman Akbar, K. Stadius, A. Pärssinen
This paper proposes a 20 – 80 GHz RF double-balanced mixer utilizing a hybrid down-conversion scheme. To achieve the down-conversion over the entire range, two mixers are operating in double-down-conversion for fixed IF of 3 GHz and RF is divided into low-band 20–44GHz and high-band 44 – 80GHz. For the low-band, the first mixer is bypassed and the second mixer used for down-conversion. For the high-band, both mixers are used for down-conversion. This results in reducing the LO tuning range by over 50% as compared to a regular sliding IF scheme. The design is evaluated using simulations of the designed mixer in 22nm CMOS technology, achieving a conversion gain of over 5 dB throughout the RF bandwidth, a minimum IIP3 of 4.9 dBm and minimum noise figure of 5.1 dB.
{"title":"Design of a 20–80 GHz Down-Conversion Mixer for 5G Wireless Communication with 22nm CMOS","authors":"Henri Hurskainen, Rehman Akbar, K. Stadius, A. Pärssinen","doi":"10.1109/6GSUMMIT49458.2020.9083850","DOIUrl":"https://doi.org/10.1109/6GSUMMIT49458.2020.9083850","url":null,"abstract":"This paper proposes a 20 – 80 GHz RF double-balanced mixer utilizing a hybrid down-conversion scheme. To achieve the down-conversion over the entire range, two mixers are operating in double-down-conversion for fixed IF of 3 GHz and RF is divided into low-band 20–44GHz and high-band 44 – 80GHz. For the low-band, the first mixer is bypassed and the second mixer used for down-conversion. For the high-band, both mixers are used for down-conversion. This results in reducing the LO tuning range by over 50% as compared to a regular sliding IF scheme. The design is evaluated using simulations of the designed mixer in 22nm CMOS technology, achieving a conversion gain of over 5 dB throughout the RF bandwidth, a minimum IIP3 of 4.9 dBm and minimum noise figure of 5.1 dB.","PeriodicalId":385212,"journal":{"name":"2020 2nd 6G Wireless Summit (6G SUMMIT)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114582111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-01DOI: 10.1109/6GSUMMIT49458.2020.9083782
Z. Siddiqui, M. Sonkki, M. Leinonen, Jiangcheng Chen, M. Berg, A. Pärssinen
This paper presents a differentially fed, dual-band dual-polarized antenna, suitable for 5G millimeter-wave, base station antenna array. The operating frequency range covers all the millimeter wave frequencies allotted in 5G NR from 24.25 GHz up to 40 GHz. Stacking technique is utilized to achieve wide dual bands and stable radiation pattern. The antenna geometry is simple, adhering to commercial multi-layer PCB fabrication requirements. Antenna design procedure and simulated results are discussed. The operating frequency of the lower band starts from 24.25 GHz up to 29.5 GHz while the higher band covers the 37 GHz to 40 GHz. The realized gain remains stable between 5 to 6 dB at all the operating frequencies. The isolation between the ports and cross-polar discrimination remain better than 30 dB in all the operating frequency range.
{"title":"A Differential Dual-band Dual-polarized Antenna for 5G mmWave Communication System","authors":"Z. Siddiqui, M. Sonkki, M. Leinonen, Jiangcheng Chen, M. Berg, A. Pärssinen","doi":"10.1109/6GSUMMIT49458.2020.9083782","DOIUrl":"https://doi.org/10.1109/6GSUMMIT49458.2020.9083782","url":null,"abstract":"This paper presents a differentially fed, dual-band dual-polarized antenna, suitable for 5G millimeter-wave, base station antenna array. The operating frequency range covers all the millimeter wave frequencies allotted in 5G NR from 24.25 GHz up to 40 GHz. Stacking technique is utilized to achieve wide dual bands and stable radiation pattern. The antenna geometry is simple, adhering to commercial multi-layer PCB fabrication requirements. Antenna design procedure and simulated results are discussed. The operating frequency of the lower band starts from 24.25 GHz up to 29.5 GHz while the higher band covers the 37 GHz to 40 GHz. The realized gain remains stable between 5 to 6 dB at all the operating frequencies. The isolation between the ports and cross-polar discrimination remain better than 30 dB in all the operating frequency range.","PeriodicalId":385212,"journal":{"name":"2020 2nd 6G Wireless Summit (6G SUMMIT)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124327043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-01DOI: 10.1109/6GSUMMIT49458.2020.9083780
Xinyue Liu, T. Xu, I. Darwazeh
Optimum operation of future mobile communication systems requires more flexible signalling mechanisms for radio access. For flexible heterogeneous signalling implementation, this work discusses coexistence scenarios of orthogonal and nonorthogonal multicarrier signals, specifically considering orthogonal frequency division multiplexing (OFDM) and spectrally efficient FDM (SEFDM) signals. Three main scenarios of the coexisting signalling are addressed under 5G new radio (5G NR) numerology with varying subcarrier spacing. Using numerical simulations, this work reports performance results of systems operating under the studied coexistence scenarios assuming uncoded and coded signals. Results reveal that systems employing SEFDM and OFDM result in some BER degradation when uncoded signals are used and also show that when applying low-density parity-check (LDPC) to the transmitted signals, the coexistence effects are mitigated and the block error rate (BLER) for both orthogonal and non-orthogonal signals suffers only slight degradation.
{"title":"Coexistence of Orthogonal and Non-orthogonal Multicarrier Signals in Beyond 5G Scenarios","authors":"Xinyue Liu, T. Xu, I. Darwazeh","doi":"10.1109/6GSUMMIT49458.2020.9083780","DOIUrl":"https://doi.org/10.1109/6GSUMMIT49458.2020.9083780","url":null,"abstract":"Optimum operation of future mobile communication systems requires more flexible signalling mechanisms for radio access. For flexible heterogeneous signalling implementation, this work discusses coexistence scenarios of orthogonal and nonorthogonal multicarrier signals, specifically considering orthogonal frequency division multiplexing (OFDM) and spectrally efficient FDM (SEFDM) signals. Three main scenarios of the coexisting signalling are addressed under 5G new radio (5G NR) numerology with varying subcarrier spacing. Using numerical simulations, this work reports performance results of systems operating under the studied coexistence scenarios assuming uncoded and coded signals. Results reveal that systems employing SEFDM and OFDM result in some BER degradation when uncoded signals are used and also show that when applying low-density parity-check (LDPC) to the transmitted signals, the coexistence effects are mitigated and the block error rate (BLER) for both orthogonal and non-orthogonal signals suffers only slight degradation.","PeriodicalId":385212,"journal":{"name":"2020 2nd 6G Wireless Summit (6G SUMMIT)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121222044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-01DOI: 10.1109/6GSUMMIT49458.2020.9083776
Stephen Henthorn, T. O’Farrell, S. Asif, M. R. Anbiyaei, K. L. Ford
The bandwidth available for improving throughputs to future mobile devices at sub-6 GHz frequencies can be increased through aggregating multiple non-contiguous bands, which may be using the same or different radio access technologies to transmit information. However, with conventional radio technology, a complete radio frequency (RF) chain is required for each band, limiting the possible increase due to space and energy consumption restraints in the mobile station (MS). This paper presents and measures a single RF chain radio for concurrent reception of three non-contiguous bands transmitting 16-QAM LTE signals, using a tunable analogue front-end and software defined radio (SDR) techniques. The receiver sensitivity is degraded by only 6dB under worst-case concurrent reception, compared with reception of a single band. This demonstrates that complex signaling techniques can be received concurrently with a single radio chain while meeting the 3GPP standards, opening the way to compact, efficient, multiband receivers for future standards.
{"title":"Tri-band Single Chain Radio Receiver for Concurrent Radio","authors":"Stephen Henthorn, T. O’Farrell, S. Asif, M. R. Anbiyaei, K. L. Ford","doi":"10.1109/6GSUMMIT49458.2020.9083776","DOIUrl":"https://doi.org/10.1109/6GSUMMIT49458.2020.9083776","url":null,"abstract":"The bandwidth available for improving throughputs to future mobile devices at sub-6 GHz frequencies can be increased through aggregating multiple non-contiguous bands, which may be using the same or different radio access technologies to transmit information. However, with conventional radio technology, a complete radio frequency (RF) chain is required for each band, limiting the possible increase due to space and energy consumption restraints in the mobile station (MS). This paper presents and measures a single RF chain radio for concurrent reception of three non-contiguous bands transmitting 16-QAM LTE signals, using a tunable analogue front-end and software defined radio (SDR) techniques. The receiver sensitivity is degraded by only 6dB under worst-case concurrent reception, compared with reception of a single band. This demonstrates that complex signaling techniques can be received concurrently with a single radio chain while meeting the 3GPP standards, opening the way to compact, efficient, multiband receivers for future standards.","PeriodicalId":385212,"journal":{"name":"2020 2nd 6G Wireless Summit (6G SUMMIT)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129367955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-01DOI: 10.1109/6GSUMMIT49458.2020.9083896
Muneeb Ejaz, T. Kumar, M. Ylianttila, E. Harjula
The recent IoT applications set strict requirements in terms of latency, scalability, security and privacy. The current IoT systems, where computation is done at data centers, provide typically very high computational and storage capacity but long routes between computational capacity and sensors/actuators make them unsuitable for latency-critical applications and services. Mobile Edge Computing (MEC) can address these problems by bringing computational capacity within or next to the base stations of access networks. Furthermore, to cope with access network problems, the capability of providing the most critical processes at the local network layer is also important. Therefore, in this paper, we compare the traditional cloud-IoT model, a MEC-based edge-cloud-IoT model, and a local edge-cloud-IoT model with respect to their performance and efficiency, using iFogSim simulator. The results complement our previous findings that utilizing the three-tier edge-IoT architecture, capable of optimally utilizing the computational capacity of each of the three tiers, is an effective measure to reduce energy consumption, improve end-to-end latency and minimize operational costs in latency-critical IoT applications.
{"title":"Performance and Efficiency Optimization of Multi-layer IoT Edge Architecture","authors":"Muneeb Ejaz, T. Kumar, M. Ylianttila, E. Harjula","doi":"10.1109/6GSUMMIT49458.2020.9083896","DOIUrl":"https://doi.org/10.1109/6GSUMMIT49458.2020.9083896","url":null,"abstract":"The recent IoT applications set strict requirements in terms of latency, scalability, security and privacy. The current IoT systems, where computation is done at data centers, provide typically very high computational and storage capacity but long routes between computational capacity and sensors/actuators make them unsuitable for latency-critical applications and services. Mobile Edge Computing (MEC) can address these problems by bringing computational capacity within or next to the base stations of access networks. Furthermore, to cope with access network problems, the capability of providing the most critical processes at the local network layer is also important. Therefore, in this paper, we compare the traditional cloud-IoT model, a MEC-based edge-cloud-IoT model, and a local edge-cloud-IoT model with respect to their performance and efficiency, using iFogSim simulator. The results complement our previous findings that utilizing the three-tier edge-IoT architecture, capable of optimally utilizing the computational capacity of each of the three tiers, is an effective measure to reduce energy consumption, improve end-to-end latency and minimize operational costs in latency-critical IoT applications.","PeriodicalId":385212,"journal":{"name":"2020 2nd 6G Wireless Summit (6G SUMMIT)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127468402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-01DOI: 10.1109/6GSUMMIT49458.2020.9083793
P. Skrimponis, S. Dutta, M. Mezzavilla, S. Rangan, Seyed Hadi Mirfarshbafan, Christoph Studer, J. Buckwalter, M. Rodwell
Power consumption is one of the most significant technical barriers for practical millimeter wave (mmWave) communication devices for mobile applications. Communication in the higher mmWave bands above 100 GHz will face even greater challenges. This paper attempts to provide initial power estimates for mobile mmWave devices under realistic parameter values and state-of-the-art device performance characteristics to understand the performance of such systems today and guide research for the future. Power is estimated for a user equipment in a multicarrier New Radio (NR) system for both a 4×100 MHz system at 28 GHz similar to current 5G deployments as well as a hypothetical 8×200 MHz system at 140 GHz that may be used in future 6G systems. Importantly, the analysis considers power consumption of both the RF front-end components as well as portions of the digital baseband processing. Both analog and fully-digital beamforming are also evaluated.
{"title":"Power Consumption Analysis for Mobile MmWave and Sub-THz Receivers","authors":"P. Skrimponis, S. Dutta, M. Mezzavilla, S. Rangan, Seyed Hadi Mirfarshbafan, Christoph Studer, J. Buckwalter, M. Rodwell","doi":"10.1109/6GSUMMIT49458.2020.9083793","DOIUrl":"https://doi.org/10.1109/6GSUMMIT49458.2020.9083793","url":null,"abstract":"Power consumption is one of the most significant technical barriers for practical millimeter wave (mmWave) communication devices for mobile applications. Communication in the higher mmWave bands above 100 GHz will face even greater challenges. This paper attempts to provide initial power estimates for mobile mmWave devices under realistic parameter values and state-of-the-art device performance characteristics to understand the performance of such systems today and guide research for the future. Power is estimated for a user equipment in a multicarrier New Radio (NR) system for both a 4×100 MHz system at 28 GHz similar to current 5G deployments as well as a hypothetical 8×200 MHz system at 140 GHz that may be used in future 6G systems. Importantly, the analysis considers power consumption of both the RF front-end components as well as portions of the digital baseband processing. Both analog and fully-digital beamforming are also evaluated.","PeriodicalId":385212,"journal":{"name":"2020 2nd 6G Wireless Summit (6G SUMMIT)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128430237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-01DOI: 10.1109/6GSUMMIT49458.2020.9083792
Stephen N. Jenkins, Brent A. Kenney, A. J. Majid, H. Moradi, B. Farhang-Boroujeny
Cyclic prefix direct sequence spread spectrum (CP-DSSS) is a novel waveform that positions itself well as a secondary network to relieve the congested wireless spectrum. The underlying structure of CP-DSSS allows for efficient and effective multiaccess capabilities through frequency and time division schemes. The sum-rate capacity of the system is maximized when the spectrum is divided and allocated to users with the best signal-to-noise (SNR) ratio for the given channel slice. We propose an algorithm for dividing and allocating portions of the spectrum to multiple users with the final goal of maximizing the sum-rate capacity of the network. We also propose and develop a precoding/equalization technique that reduces the length of the channel impulse response. This, when used along with a matched filter detector, leads to a noticeable improvement in the sum-rate capacity of the network.
{"title":"CP- DSSS: A Novel Waveform for Multiple Access in IoT","authors":"Stephen N. Jenkins, Brent A. Kenney, A. J. Majid, H. Moradi, B. Farhang-Boroujeny","doi":"10.1109/6GSUMMIT49458.2020.9083792","DOIUrl":"https://doi.org/10.1109/6GSUMMIT49458.2020.9083792","url":null,"abstract":"Cyclic prefix direct sequence spread spectrum (CP-DSSS) is a novel waveform that positions itself well as a secondary network to relieve the congested wireless spectrum. The underlying structure of CP-DSSS allows for efficient and effective multiaccess capabilities through frequency and time division schemes. The sum-rate capacity of the system is maximized when the spectrum is divided and allocated to users with the best signal-to-noise (SNR) ratio for the given channel slice. We propose an algorithm for dividing and allocating portions of the spectrum to multiple users with the final goal of maximizing the sum-rate capacity of the network. We also propose and develop a precoding/equalization technique that reduces the length of the channel impulse response. This, when used along with a matched filter detector, leads to a noticeable improvement in the sum-rate capacity of the network.","PeriodicalId":385212,"journal":{"name":"2020 2nd 6G Wireless Summit (6G SUMMIT)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131044700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：